- A
Use Azure Cache for Redis as the session state provider via the RedisSessionStateProvider NuGet package, and configure the database connection string in Azure App Service App Settings.
Redis session state provider is easy to configure, supports auto-scaling, and minimal code changes. Database connection string in App Settings allows easy configuration.
- B
Store session state in Azure Table Storage using a custom session state provider, and use a connection string for Azure SQL Database.
Why wrong: Custom session state provider requires significant code changes and is not recommended.
- C
Configure session state using Azure SQL Database with a session state database, and update the connection string in web.config.
Why wrong: This requires installing a session state database and modifying web.config; also SQL Server session state provider may not be optimal for auto-scaling.
- D
Use App Service's built-in session state with ARR affinity and connect to Azure SQL Database using Managed Identity.
Why wrong: ARR affinity ties a user to a specific instance, which breaks auto-scaling and is not recommended. Managed Identity is fine for database, but session state remains a problem.
Quick Answer
The correct answer is to use Azure Cache for Redis as the session state provider via the RedisSessionStateProvider NuGet package, with the database connection string configured in Azure App Service App Settings. This solution works because Azure Cache for Redis provides a distributed, in-memory cache that allows session state to be shared seamlessly across multiple App Service instances, which is essential for auto-scaling without losing user sessions. The RedisSessionStateProvider acts as a drop-in replacement for the default in-memory provider, minimizing code changes by handling serialization and locking automatically. On the AZ-204 exam, this scenario tests your understanding of state management patterns in cloud-native applications, often appearing as a trap where candidates mistakenly choose sticky sessions or SQL Server session state—both of which break under scale-out or require heavy refactoring. A key memory tip: remember that Redis is the “glue” for stateless web apps—if you need to scale out without rewriting session logic, think “Redis drop-in, no code spin.”
AZ-204 Develop Azure compute solutions Practice Question
This AZ-204 practice question tests your understanding of develop azure compute solutions. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Your company is migrating a legacy on-premises .NET Framework 4.7.2 web application to Azure. The application uses session state stored in-memory and reads/writes to a local SQL Server database. The migration must minimize code changes, support auto-scaling, and handle session state across multiple instances. You plan to use Azure App Service with Windows OS. You need to recommend a solution for session state storage and database connectivity. Which option should you choose?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"minimum / minimize"Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Use Azure Cache for Redis as the session state provider via the RedisSessionStateProvider NuGet package, and configure the database connection string in Azure App Service App Settings.
Option A is correct because Azure Cache for Redis provides a distributed, in-memory session state provider that supports session state sharing across multiple App Service instances without requiring code changes to the application logic. The RedisSessionStateProvider NuGet package is a drop-in replacement for the default in-memory provider, and configuring the database connection string in App Settings allows you to change the target without modifying web.config, minimizing migration effort.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Use Azure Cache for Redis as the session state provider via the RedisSessionStateProvider NuGet package, and configure the database connection string in Azure App Service App Settings.
Why this is correct
Redis session state provider is easy to configure, supports auto-scaling, and minimal code changes. Database connection string in App Settings allows easy configuration.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Store session state in Azure Table Storage using a custom session state provider, and use a connection string for Azure SQL Database.
Why it's wrong here
Custom session state provider requires significant code changes and is not recommended.
- ✗
Configure session state using Azure SQL Database with a session state database, and update the connection string in web.config.
Why it's wrong here
This requires installing a session state database and modifying web.config; also SQL Server session state provider may not be optimal for auto-scaling.
- ✗
Use App Service's built-in session state with ARR affinity and connect to Azure SQL Database using Managed Identity.
Why it's wrong here
ARR affinity ties a user to a specific instance, which breaks auto-scaling and is not recommended. Managed Identity is fine for database, but session state remains a problem.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse ARR affinity with a valid session state solution, not realizing that it prevents horizontal scaling by forcing requests to a single instance, which contradicts the auto-scaling requirement.
Detailed technical explanation
How to think about this question
Azure Cache for Redis uses the Redis protocol (RESP) to provide sub-millisecond read/write operations, and the RedisSessionStateProvider serializes session data into a hash stored in Redis, automatically handling expiration via the session timeout. In a real-world scenario, when App Service scales out to multiple instances, each instance reads and writes to the same Redis cache, ensuring session consistency without requiring sticky sessions or database round-trips.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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Develop Azure compute solutions — study guide chapter
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FAQ
Questions learners often ask
What does this AZ-204 question test?
Develop Azure compute solutions — This question tests Develop Azure compute solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use Azure Cache for Redis as the session state provider via the RedisSessionStateProvider NuGet package, and configure the database connection string in Azure App Service App Settings. — Option A is correct because Azure Cache for Redis provides a distributed, in-memory session state provider that supports session state sharing across multiple App Service instances without requiring code changes to the application logic. The RedisSessionStateProvider NuGet package is a drop-in replacement for the default in-memory provider, and configuring the database connection string in App Settings allows you to change the target without modifying web.config, minimizing migration effort.
What should I do if I get this AZ-204 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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Last reviewed: Jun 24, 2026
This AZ-204 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the AZ-204 exam.
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